Beispiel #1
0
/**
* Return XML for a single component from the DB
*
* @param array $properties The properties for this component
* @param string $item The DB row data for this component
*
* @return string An XML document which is the response for the component
*/
function component_to_xml($properties, $item)
{
    global $session, $c, $request, $reply;
    dbg_error_log("REPORT", "Building XML Response for item '%s'", $item->dav_name);
    $denied = array();
    $unsupported = array();
    $caldav_data = $item->caldav_data;
    $displayname = preg_replace('{^.*/}', '', $item->dav_name);
    $type = 'unknown';
    $contenttype = 'text/plain';
    switch ($item->caldav_type) {
        case 'VJOURNAL':
        case 'VEVENT':
        case 'VTODO':
            $displayname = $item->summary;
            $type = 'calendar';
            $contenttype = 'text/calendar';
            break;
        case 'VCARD':
            $displayname = $item->fn;
            $type = 'vcard';
            $contenttype = 'text/vcard';
            break;
    }
    if (isset($properties['calendar-data']) || isset($properties['displayname'])) {
        if (!$request->AllowedTo('all') && $session->user_no != $item->user_no) {
            // the user is not admin / owner of this calendarlooking at his calendar and can not admin the other cal
            /** @todo We should examine the ORGANIZER and ATTENDEE fields in the event.  If this person is there then they should see this */
            if ($type == 'calendar' && $item->class == 'CONFIDENTIAL' || !$request->AllowedTo('read')) {
                $ical = new iCalComponent($caldav_data);
                $resources = $ical->GetComponents('VTIMEZONE', false);
                $first = $resources[0];
                // if the event is confidential we fake one that just says "Busy"
                $confidential = new iCalComponent();
                $confidential->SetType($first->GetType());
                $confidential->AddProperty('SUMMARY', translate('Busy'));
                $confidential->AddProperty('CLASS', 'CONFIDENTIAL');
                $confidential->SetProperties($first->GetProperties('DTSTART'), 'DTSTART');
                $confidential->SetProperties($first->GetProperties('RRULE'), 'RRULE');
                $confidential->SetProperties($first->GetProperties('DURATION'), 'DURATION');
                $confidential->SetProperties($first->GetProperties('DTEND'), 'DTEND');
                $confidential->SetProperties($first->GetProperties('UID'), 'UID');
                $ical->SetComponents(array($confidential), $confidential->GetType());
                $caldav_data = $ical->Render();
                $displayname = translate('Busy');
            }
        }
    }
    $url = ConstructURL($item->dav_name);
    $prop = new XMLElement("prop");
    foreach ($properties as $k => $v) {
        switch ($k) {
            case 'getcontentlength':
                $contentlength = strlen($caldav_data);
                $prop->NewElement($k, $contentlength);
                break;
            case 'getlastmodified':
                $prop->NewElement($k, ISODateToHTTPDate($item->modified));
                break;
            case 'calendar-data':
                if ($type == 'calendar') {
                    $reply->CalDAVElement($prop, $k, $caldav_data);
                } else {
                    $unsupported[] = $k;
                }
                break;
            case 'address-data':
                if ($type == 'vcard') {
                    $reply->CardDAVElement($prop, $k, $caldav_data);
                } else {
                    $unsupported[] = $k;
                }
                break;
            case 'getcontenttype':
                $prop->NewElement($k, $contenttype);
                break;
            case 'current-user-principal':
                $prop->NewElement("current-user-principal", $request->current_user_principal_xml);
                break;
            case 'displayname':
                $prop->NewElement($k, $displayname);
                break;
            case 'resourcetype':
                $prop->NewElement($k);
                // Just an empty resourcetype for a non-collection.
                break;
            case 'getetag':
                $prop->NewElement($k, '"' . $item->dav_etag . '"');
                break;
            case '"current-user-privilege-set"':
                $prop->NewElement($k, privileges($request->permissions));
                break;
            case 'SOME-DENIED-PROPERTY':
                /** indicating the style for future expansion */
                $denied[] = $k;
                break;
            default:
                dbg_error_log('REPORT', "Request for unsupported property '%s' of calendar item.", $v);
                $unsupported[] = $k;
        }
    }
    $status = new XMLElement("status", "HTTP/1.1 200 OK");
    $propstat = new XMLElement("propstat", array($prop, $status));
    $href = new XMLElement("href", $url);
    $elements = array($href, $propstat);
    if (count($denied) > 0) {
        $status = new XMLElement("status", "HTTP/1.1 403 Forbidden");
        $noprop = new XMLElement("prop");
        foreach ($denied as $k => $v) {
            $noprop->NewElement(strtolower($v));
        }
        $elements[] = new XMLElement("propstat", array($noprop, $status));
    }
    if (count($unsupported) > 0) {
        $status = new XMLElement("status", "HTTP/1.1 404 Not Found");
        $noprop = new XMLElement("prop");
        foreach ($unsupported as $k => $v) {
            $noprop->NewElement(strtolower($v));
        }
        $elements[] = new XMLElement("propstat", array($noprop, $status));
    }
    $response = new XMLElement("response", $elements);
    return $response;
}